50results about How to "Improve scanning rate" patented technology

Edge effects in electro-optic displays are reduced by (a) ensuring that during rewriting of the display, the last period of non-zero voltage applied all pixels terminates at substantially the same time; and (b) scanning the display at a scan rate of at least 50 Hz.

A camera module (170) includes a miniature scanning mirror (120), lens elements (163a to 163d) corresponding to thin lateral lens slices, and a short, wide imaging sensor (165). As the scanning mirror (120) pivots to scan a scene, the imaging sensor (165) captures successive image segments. Multiple image segments are stitched together by software running on a digital processor to provide a complete image. The assembly of lens elements (163a to 163d) may include moveable elements to allow variable focus, variable magnification and image stabilization, and may utilize refraction, reflection, diffraction and/or planar optical elements. The camera module (170) may be less than 5 millimeters thick while allowing long focal length lenses and increased light collecting area. Other embodiments include a switchable scan mirror with two apertures and a dual-camera system that provides binocular images and video.

A method and device for regulating the transport of material in a sewing or embroidery machine (1) that uses information from a position or movement sensor (33) located underneath the throat plate (21). The controls for the sewing machine (1) calculate deviations of the actual feeding increments of the article to be sewn from the corresponding target values from the periodically read sensor signals. With this information, the feeding increments are regulated in such a way that the deviations are cancelled out by averaging.

This invention relates to tandem mass spectrometry and, in particular, to tandem mass spectrometry using a linear ion trap and a time of flight detector to collect mass spectra to form a MS/MS experiment. The accepted standard is to store and mass analyze precursor ions in the ion trap before ejecting the ions axially to a collision cell for fragmentation before mass analysis of the fragments in the time of flight detector. This invention makes use of orthogonal ejection of ions with a narrow range of m/z values to produce a ribbon beam of ions that are injected into the collision cell. The shape of this beam and the high energy of the ions are accommodated by using a planar design of collision cell. Ions are retained in the ion trap during ejection so that successive narrow ranges may be stepped through consecutively to cover all precursor ions of interest.

A self-propelled agricultural machine having a position-finding system including a position-finding device for detecting positions of guide variables relative to the machine and at least one adjusting device for adjusting the orientation of the region of coverage of the position-finding device relative to the machine. The position of the crop edge detected by the position-finding device is used for adjustment of the orientation of the region of coverage of the position-finding device relative to the machine. The position-finding system provides reliable control of the machine along the path of the crop edge. At least one adjusting device orientates the positioning-finding device relative to the machine for tracking the machine along the detected crop edge. In addition, the signals of a further position-finding device in a feed region of a cutterbar is taken into consideration.

A method and apparatus for performing data collection within a device is disclosed. A device steers a scanning probe in a continuous, non-raster pattern across a specimen. The specimen is supported by a stage, and data is collected in response to interaction between the probe and the specimen to form a data set. Spiral scanning patterns without turnaround regions are utilized in embodiments of the present invention, both with and without rounded corners in the scanning patterns.

The present invention defines a method of correcting for eye movement during optical coherence tomography imaging. The method includes imaging (by scanning) a fundus of an eye to obtain a fundus image (for example, using an SLO); scanning the fundus to obtain a plurality of tomographic images (for example, using OCT); determining, at predetermined intervals, an alignment of the tomographic images with respect to the fundus image, and, if it is determined that there is a misalignment, determining the number of tomographic images that have been scanned in the predetermined interval since the previous alignment determination; determining the offset by which the tomographic images are misaligned; applying the offset to the next tomographic image to be scanned and rescanning the determined number of tomographic images that were scanned during the interval between misalignment being determined and offset being applied.

A light scanning arrangement includes a frame directly moved by an inertial drive in order to oscillate a scan element supported by a hinge on the frame at high scan rates and with minimal electrical power consumption.

A swept source OCT system and related method are disclosed. The system comprises a control device for operating a tunable light source in response to an electronic sweep control signal such that the tunable light source carries out wave length sweeps with a repetition rate f_sweep, which depends on the frequency of the sweep control signal. The system further comprises a detection device for the time-resolved detection of an interference signal from a sample beam and a reference beam with the help of a detection cycle signal. The sweep control signal and the detection cycle signal are phase-locked, or means for creating a signal or signal sequence are provided, said signal or signal sequence being characterising for the frequency relationship and/or the relative phase position of the sweep control signal and detection cycle signal.

The invention provides an optical device, including a light-transmissive substrate, and a pair of different, parallel gratings including a first grating and a second grating, located on the substrate at a constant distance from each other, each of the pair of parallel gratings including at least one sequence of a plurality of parallel lines, wherein the spacings between the lines gradually increase from one edge of the grating up to a maximum distance between the lines, and wherein the arrangement of lines in the second grating is in the same direction as that of the first grating. A system utilizing a plurality of such optical devices is also disclosed.

The disclosure discloses a method for reinforcing a rail by laser and auxiliary heat source efficient hybrid cladding. The laser and the auxiliary heat source simultaneously apply on a region to be cladded of a rail surface. The laser serves as a main heat source to enable simultaneous and rapid fusion of an added metal powder and partial substrate material in the rail surface to form a molten pool. The auxiliary heat source moves with the laser heat source in the same direction at the same speed, and performs synchronous preheating and/or post-heating on the laser molten pool, the heat-affected zone and the surface layer of the rail substrate to reduce the temperature gradient, thereby reducing the cooling rate, and avoiding martensite transformation and cracking in the heat-affected zone.

The invention provides a dynamic frequency scanning method used for short wave networking link building. The method includes the following steps that (1), frequencies in a frequency set are sequentially scanned one by one, and whether each scanned frequency is a good frequency or not is judged according to the quality of a received detection signal on the frequency; (2), if the good frequencies occur, the other frequencies except the good frequencies are classified as standby frequencies, the step (3) is executed, and otherwise scanning continues to be performed according to the step (1); (3), the good frequencies are scanned one time firstly, then one standby frequency is scanned, then the good frequencies are scanned one time, another standby frequency is scanned, and the circulation is performed until the final standby frequency is scanned. The scanning sequence of the frequencies can be dynamically adjusted according to the quality of the scanned frequencies, and the time for link building can be obviously shortened, so that transmission efficiency of a whole short wave communication system is improved, and the dynamic frequency scanning method is particularly suitable for large-scale short wave networking application large in number of frequencies.

The invention relates to a method and a device for determining the position of a closing part of a vehicle, that can be moved by a direct-current motor. A motor current signal is derived from the direct-current motor and converted into a digital signal by means of an analog-digital converter. The signal is filtered and forwarded to a position counter for counting the current ripple. The scanning frequency of the analog-digital converter is modified according to the rotational speed of the direct-current motor.

The invention discloses a high-scanning-rate leaky-wave antenna based on a metamaterial. The antenna is loaded with a complementary L-type sub-wavelength metal resonance unit so as to achieve the left-hand electromagnetic characteristic of a specific frequency band. The antenna unit comprises a pair of complementary L-shaped metal resonance units which are formed by metal through holes and printing metal strips, and the position, which corresponds to a metal resonator, of the top layer is provided with a rectangular groove so as to achieve electromagnetic wave leakage. The period p of the antenna unit meets the spatial harmonic formula of the periodic leaky-wave antenna: [beta]n=[beta]0-2[pi]n/p. The leaky-wave antenna adopts an SIW structure, and a port adopts a trapezoidal SIW structure and a microstrip line to realize port feeding and impedance matching together. The antenna adopts an SIW structure and microstrip feed, is small in size, stable in structure and high in scanning rate of a directional diagram in a unit frequency band, and has very high practical potential for applications of communication engineering, microwave imaging, radar scanning and the like.